Laboratory fume hood air guide structure and laboratory fume hood thereof

Abstract

The utility model discloses a laboratory fume cupboard air guide structure and a laboratory fume cupboard thereof, the laboratory fume cupboard air guide structure comprises an upper air guide plate and a lower air guide plate, the upper air guide plate comprises a first air guide plate and a second air guide plate, and an inverted V-shaped structure is formed between the first air guide plate and the second air guide plate. A gas buffer area is formed between the first air guide plate and the second air guide plate, a plurality of air suction holes are formed in the upper air guide plate, the first air guide plate and the second air guide plate, strip-shaped air suction openings are formed in the upper side and the lower side of the first air guide plate and the upper side and the lower side of the second air guide plate, an air suction pipe is arranged on the lower air guide plate, and the air suction holes are communicated with the air suction pipe. A plurality of exhaust pipes are arranged on the back sides of the first air deflector and the second air deflector; according to the ventilation cabinet, the situation that gas escapes out of the ventilation cabinet in the rising process when a large amount of gas is generated can be avoided, the gas buffering area is used for buffering, and therefore the situation that the gas escapes to the outside and threatens the working environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to laboratory fume hoods, in particular to an air guide structure of a laboratory fume hood and the laboratory fume hood. Background Art

[0002] During chemical experiments, many chemicals are highly volatile and harmful to the human body. If the experimenters are exposed to such chemicals for a long time, they will cause great damage to their bodies. Therefore, in order to make chemical experiments safer, to protect the health and safety of the experimenters, and to prevent the experimenters from inhaling or swallowing some toxic, pathogenic, or unknown toxic chemicals and organisms, the laboratory should have good ventilation. The use of fume hoods, exhaust hoods, or local ventilation is a common choice for general organic chemistry laboratories. Existing fume hoods generally have a vertical lower air guide plate on the side and an inclined upper air guide plate on the top. However, when the exhaust gas volume is large, such an air guide structure will easily move up along the inclined upper air guide plate and escape into the indoor environment, which can easily pollute the indoor environment. Utility Model Content

[0003] In order to solve the defect of the prior art that when the amount of exhaust gas is large, the exhaust gas is likely to move up along the inclined upper air guide plate and escape into the indoor environment, which easily causes pollution to the indoor environment, the utility model provides a laboratory fume hood air guide structure and a laboratory fume hood thereof.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The utility model discloses an air guide structure for a laboratory fume hood, comprising an upper air guide plate and a lower air guide plate, the upper air guide plate comprising a first air guide plate and a second air guide plate, an inverted V-shaped structure is formed between the first air guide plate and the second air guide plate, a gas buffer area is formed between the first air guide plate and the second air guide plate, a plurality of air suction holes are provided on the upper air guide plate, the upper and lower sides of the first air guide plate and the second air guide plate are respectively provided with strip-shaped air suction ports, and the lower air guide plate is provided with an exhaust pipe, and a plurality of exhaust pipes are provided on the back sides of the first air guide plate and the second air guide plate.

[0006] As a preferred technical solution of the present invention, the interiors of the first air guide plate and the second air guide plate are not connected.

[0007] As a preferred technical solution of the present invention, the diameters of the air suction holes on the lower air guide plate decrease from top to bottom, and the diameter of the air suction holes in the upper row is 2 cm.

[0008] As a preferred technical solution of the present invention, the angle between the first air guide plate and the second air guide plate is between 130° and 150°.

[0009] As a preferred technical solution of the present invention, the upper air guide plate and the lower air guide plate are connected via a sealing plate, and the sealing plate is fixed to the upper air guide plate and the lower air guide plate via bolts.

[0010] As an optimal technical solution of the present invention, it includes a fume hood body, the upper air guide plate is arranged on the top of the inner cavity of the internal operating room of the fume hood body, and the lower air guide plate is arranged on the inner side of the internal operating room of the fume hood body.

[0011] As a preferred technical solution of the present invention, a fan connected to the exhaust pipe and the air exhaust pipe is further provided in the fume hood body, and the air outlet end of the fan is connected to the external exhaust duct.

[0012] The beneficial effects of the utility model are:

[0013] In this laboratory fume hood air guide structure and laboratory fume hood thereof, an upper air guide plate with a specific structure composed of a first air guide plate and a second air guide plate is arranged, wherein an inverted V-shaped structure is formed between the first air guide plate and the second air guide plate, and a gas buffer area is formed between the first air guide plate and the second air guide plate. This prevents the gas from escaping outside the fume hood during the rising process when a large amount of gas is generated, and the gas is cached by using the gas buffer area, thus preventing the gas from escaping to the outside and posing a threat to the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural diagram of an air guide structure of a laboratory fume hood of the utility model;

[0016] Figure 2 This is a structural schematic diagram of an air intake port of an air guide structure of a laboratory fume hood according to the present invention;

[0017] Figure 3 The utility model is a structural schematic diagram of a laboratory fume hood.

[0018] In the figure: 1. Upper air guide plate; 2. Lower air guide plate; 3. First air guide plate; 4. Second air guide plate; 5. Air suction hole; 6. Air suction port; 7. Exhaust pipe; 8. Exhaust pipe; 9. Sealing plate; 10. Wind cabinet body. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0020] Example: Figure 1 、 Figure 2 As shown, the utility model provides an air guide structure for a laboratory fume hood, comprising an upper air guide plate 1 and a lower air guide plate 2, the upper air guide plate 1 comprising a first air guide plate 3 and a second air guide plate 4, an inverted V-shaped structure being formed between the first air guide plate 3 and the second air guide plate 4, a gas buffer zone being formed between the first air guide plate 3 and the second air guide plate 4, a plurality of air suction holes 5 being provided on the upper air guide plate 1, the first air guide plate 3 and the second air guide plate 4, the upper and lower sides of the first air guide plate 3 and the second air guide plate 4 being provided with strip-shaped air suction ports 6, and an exhaust pipe 7 being provided on the lower air guide plate 2, and a plurality of exhaust pipes 8 being provided on the back sides of the first air guide plate 3 and the second air guide plate 4. By setting an upper air guide plate 1 with a specific structure composed of a first air guide plate 3 and a second air guide plate 4, wherein an inverted V-shaped structure is formed between the first air guide plate 3 and the second air guide plate 4, a gas buffer area is formed between the first air guide plate 3 and the second air guide plate 4, so as to prevent the gas from escaping outside the fume hood during the rising process when a large amount of gas is generated, and the gas is cached by using the gas buffer area, thus preventing the gas from escaping to the outside and posing a threat to the working environment.

[0021] The interiors of the first air guide plate 3 and the second air guide plate 4 are not connected, so they do not affect each other during air extraction.

[0022] Among them, the apertures of the air suction holes 5 on the lower air guide plate 2 decrease from top to bottom, and the aperture of the air suction holes 5 in the upper row is 2 cm, so that when the gas rises, it has a better suction effect.

[0023] The included angle between the first air guide plate 3 and the second air guide plate 4 is in the range of 130° to 150°.

[0024] The upper air guide plate 1 and the lower air guide plate 2 are connected via a sealing plate 9. The sealing plate 9 is fixed to the upper air guide plate 1 and the lower air guide plate 2 by bolts, thereby connecting the upper air guide plate 1 and the lower air guide plate 2 into one body, so that the gas can smoothly enter the gas buffer area and be quickly sucked in by the suction action of the strip-shaped air suction port 6.

[0025] Among them, a laboratory fume hood, such as Figure 3As shown, it includes a laboratory fume hood air guide structure as mentioned above, including a fume hood main body 10, the upper air guide plate 1 is arranged on the top of the inner cavity of the internal operating room of the fume hood main body 10, and the lower air guide plate 2 is arranged on the inner side of the internal operating room of the fume hood main body 10, so that when the amount of exhaust gas in the fume hood is large, a large amount of exhaust gas generated instantly can be cached in the exhaust gas buffer area, thereby preventing it from escaping to the outside and posing a threat to the working environment.

[0026] The fume hood body 10 is further provided with a fan connected to the exhaust pipe 7 and the exhaust pipe 8, and the air outlet end of the fan is connected to the external exhaust duct.

[0027] During operation, the air guide structure of this laboratory fume hood is provided with an upper air guide plate 1 having a specific structure composed of a first air guide plate 3 and a second air guide plate 4, wherein an inverted V-shaped structure is formed between the first air guide plate 3 and the second air guide plate 4, and a gas buffer area is formed between the first air guide plate 3 and the second air guide plate 4. This prevents the gas from escaping outside the fume hood during the rising process when a large amount of gas is generated, and the gas buffer area is used for caching, thereby preventing the gas from escaping to the outside and posing a threat to the working environment.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A laboratory fume hood air guide structure, characterized in that: The invention comprises an upper air guide plate (1) and a lower air guide plate (2), wherein the upper air guide plate (1) comprises a first air guide plate (3) and a second air guide plate (4), an inverted V-shaped structure is formed between the first air guide plate (3) and the second air guide plate (4), and a gas buffer zone is formed between the first air guide plate (3) and the second air guide plate (4), the upper air guide plate (1), the first air guide plate (3) and the second air guide plate (4) are all provided with a plurality of air suction holes (5), the upper and lower sides of the first air guide plate (3) and the second air guide plate (4) are both provided with strip-shaped air suction ports (6), and the lower air guide plate (2) is provided with an exhaust pipe (7), and the back sides of the first air guide plate (3) and the second air guide plate (4) are provided with a plurality of exhaust pipes (8).

2. The air guide structure of a laboratory fume hood according to claim 1, characterized in that: The interiors of the first air guide plate (3) and the second air guide plate (4) are not connected.

3. The air guide structure of a laboratory fume hood according to claim 1, characterized in that: The diameters of the air suction holes (5) on the lower air guide plate (2) decrease from top to bottom, and the diameter of the air suction holes (5) in the upper row is 2 cm.

4. The air guide structure of a laboratory fume hood according to claim 2, characterized in that: The included angle between the first air guide plate (3) and the second air guide plate (4) is between 130° and 150°.

5. The air guide structure of a laboratory fume hood according to claim 2, characterized in that: The upper air guide plate (1) and the lower air guide plate (2) are connected via a sealing plate (9), and the sealing plate (9) is fixed to the upper air guide plate (1) and the lower air guide plate (2) via bolts.

6. A laboratory fume hood, comprising a laboratory fume hood air guide structure according to any one of claims 1 to 4, characterized in that: The invention comprises a fume hood body (10), wherein the upper air guide plate (1) is arranged on the top of the inner cavity of the internal operating room of the fume hood body (10), and the lower air guide plate (2) is arranged on the inner side of the internal operating room of the fume hood body (10).

7. A laboratory fume hood according to claim 6, characterized in that: A fan connected to the exhaust pipe (7) and the air exhaust pipe (8) is also provided in the fume hood body (10), and the air outlet end of the fan is connected to an external exhaust duct.

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